inconsistent Information concerning STM32L071

[Zt Liu]

Posted on August 22, 2017 at 07:47

Hi, 

There is an inconsistent information about the numbers of usart in series STM32L071KBTx and STM32L071KZTx

(both LQFP32.)

in the datasheet, it says there are 3 usart:

=====================================================================

but in the STM32CubeMx, if I choose L071KBTx, I got 4 USART?!

Have I misunderstood something....?

There are totally 3 USART or 4 USART in this package??!!

I would like to know!

Thanks in advanced.

=======================================================================

PS:

In the STMCU Finder pc software, if I choose STM32L0x1 and I request 4 USART,

then there will be no LQFP32 package in the result list. 

However, If I use STM32CubeMx, doing the same (choose STM32L0x1 and 4 usart), 

there will be STM32F071KB and STM32F071KZ in the result list.

=======================================================================

Zt.

#usart #stm32l0 #stm32l0x1

[Amel NASRI · Accepted solution]

Posted on August 23, 2017 at 12:01

Hi

Liu.Zhitai

‌,

For LQFP32 package, there are 4 USARTs available: you can check it based on pinout table.

However, if you use the UFQFPN32 package, only 3 USARTs can be used.

I agree with you that this has to be precised in the Table 2 of the datasheet.

I will check also for ST MCU Finder tool.

-Amel

[Zt Liu]

Posted on August 23, 2017 at 12:13

hey, thanks,

I can safely purchase them finally!

[Uwe Bonnes]

Posted on August 23, 2017 at 13:15

Good luck for buying these parts. Hopefully you have good connections!

I have not seen any 32 Pin LQFP device with Flash > 64 kB out in the wild.